When concerns are raised about the conduct of assembly members, they are investigated by the standards commissioner.

Sir Roderick Evans is an independent person appointed by the assembly to safeguard standards, to uphold reputations, and to address concerns.

He refused to comment.

The code of conduct for assembly members sets out how AMs can use the allowance they are given to do their job, and what is not allowed.

It states: "Assembly members must ensure that they use assembly resources for the purpose of their activities as assembly members only and not for any of the purposes listed below, which are prohibited."

These are:

personal, business or commercial communications

party political activity of any kind, for example, party-political fund-raising, recruitment of party members and the organisation and publicising of party political meetings

campaigning for the election or re-election of particular candidates for any public office (including the member in question)